bean中的Spring JavaConfig属性没有设置？

我正在考虑使用Spring JavaConfig和一些属性文件,但bean中的属性没有设置？在bean中没有设置？

这是我的WebConfig：

@Configuration
@EnableWebMvc
@PropertySource(value = "classpath:application.properties")
@Import(DatabaseConfig.class)
@ImportResource("/WEB-INF/applicationContext.xml")
public class WebMVCConfig extends WebMvcConfigurerAdapter {
    private static final String MESSAGE_SOURCE = "/WEB-INF/classes/messages";
    private static final Logger logger = LoggerFactory.getLogger(WebMVCConfig.class);
    @Value("${rt.setPassword}")
    private String RTPassword;
    @Value("${rt.setUrl}")
    private String RTURL;
    @Value("${rt.setUser}")
    private String RTUser;
    @Bean
    public  ViewResolver resolver() {
        UrlBasedViewResolver url = new UrlBasedViewResolver();
        url.setPrefix("/WEB-INF/view/");
        url.setViewClass(JstlView.class);
        url.setSuffix(".jsp");
        return url;
    }
    @Bean(name = "messageSource")
    public MessageSource configureMessageSource() {
        logger.debug("setting up message source");
        ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
        messageSource.setBasename(MESSAGE_SOURCE);
        messageSource.setCacheSeconds(5);
        messageSource.setDefaultEncoding("UTF-8");
        return messageSource;
    }
    @Bean
    public LocaleResolver localeResolver() {
        SessionLocaleResolver lr = new SessionLocaleResolver();
        lr.setDefaultLocale(Locale.ENGLISH);
        return lr;
    }
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        logger.debug("setting up resource handlers");
        registry.addResourceHandler("/resources/").addResourceLocations("/resources/**");
    }
    @Override
    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
        logger.debug("configureDefaultServletHandling");
        configurer.enable();
    }
    @Override
    public void addInterceptors(final InterceptorRegistry registry) {
        registry.addInterceptor(new LocaleChangeInterceptor());
    }
    @Bean
    public SimpleMappingExceptionResolver simpleMappingExceptionResolver() {
        SimpleMappingExceptionResolver b = new SimpleMappingExceptionResolver();
        Properties mappings = new Properties();
        mappings.put("org.springframework.web.servlet.PageNotFound","p404");
        mappings.put("org.springframework.dao.DataAccessException","dataAccessFailure");
        mappings.put("org.springframework.transaction.TransactionException","dataAccessFailure");
        b.setExceptionMappings(mappings);
        return b;
    }
    @Bean
    public RequestTrackerConfig requestTrackerConfig()
    {
        RequestTrackerConfig tr = new RequestTrackerConfig();
        tr.setPassword(RTPassword);
        tr.setUrl(RTURL);
        tr.setUser(RTUser);
        return tr;
    }
}

tr.url中的值是“rt.setUrl”而不是application.properties中的值？

最佳答案

我不是100％,但我认为你的@PropertySource不太对劲.代替

@PropertySource(value =“classpath：application.properties”)

它应该只是：

@PropertySource( “类路径：application.properties”)

基于此：

Spring PropertySource Documentation

另外,根据上面的链接,因为你提到你转换为java配置方法而不是xml,我认为以下可能是你的问题的解决方案：

Resolving ${…} placeholders in and @Value annotations In
order to resolve ${…} placeholders in definitions or @Value
annotations using properties from a PropertySource,one must register
a PropertySourcesPlaceholderConfigurer. This happens automatically
when using in XML,but must be
explicitly registered using a static @Bean method when using
@Configuration classes. See the “Working with externalized values”
section of @Configuration Javadoc and “a note on
beanfactoryPostProcessor-returning @Bean methods” of @Bean Javadoc for
details and examples.

上面链接中的示例是我通常如何做到的：

 @Configuration
 @PropertySource("classpath:/com/myco/app.properties")
 public class AppConfig {
     @Autowired
     Environment env;
     @Bean
     public TestBean testBean() {
         TestBean testBean = new TestBean();
         testBean.setName(env.getProperty("testbean.name"));
         return testBean;
    }
 }

所以在顶部添加：

@Autowired
Environment env;

然后在你的方法中使用：

tr.setPassword(env.getProperty("rt.setPassword"));

等等剩余的属性值.我对你的做法并不熟悉.我知道上面的方法会起作用.

bean中的Spring JavaConfig属性没有设置？

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